A tempting move, attacking the d6-pawn and changing the character of the game. Black, however, can defend with accurate play and there was a better move.
12... d8c7  13. b3d4 The knight goes back to the center. 13... a7a6  14. d4c6 A very deep and strong idea. Vidit uses a tactical chance to open the game. 14... c7c6 